Net Render Outputs Black .exr Files, Regardless of Selected File Type
While multilayer OpenEXR files are a useful way to keep all the render results in one file, not every application supports them.

An easy way to get render output that can be used outside of blenders compositor is to save each part into a more compatible file, blenders file output node is useful for this.



As shown in the node properties, each output file can have it's own file format and any compositing can be included with the output.